This verb follows the standard English past tense rule: simply add -ed to the base form.
Bioassay is regular. It follows the Standard -ed rule.
Use past time markers: "Yesterday, she bioassayed to the store."
No. Use "did not bioassay" (not "did not bioassayed").
The verb bioassay follows the standard English past tense conjugation rule. When forming the past tense, bioassay becomes bioassayed. This follows the Standard -ed pattern, which is one of the most common conjugation rules in English.
Understanding why bioassay becomes bioassayed helps with spelling and pronunciation. This verb follows the standard English past tense rule: simply add -ed to the base form.
When using bioassayed in writing, remember that it functions as a past tense verb and typically appears with time markers like yesterday, last week, or ago. For example: "Yesterday, she bioassayed to the store." The past tense form does not change based on the subject — I bioassayed, you bioassayed, he/she bioassayed, we bioassayed, they bioassayed.